濟(jì)南的氣候特點(diǎn)與墻體基礎(chǔ)條件，使得膩?zhàn)臃凼┕み^(guò)程中容易出現(xiàn)各類問(wèn)題，這些問(wèn)題既與材料特性相關(guān)，也受環(huán)境因素影響。了解施工中的常見(jiàn)問(wèn)題及成因，對(duì)提升墻面質(zhì)量、避免后期返修具有重要意義。

　　The climate characteristics and wall foundation conditions in Jinan make it easy for various problems to occur during the construction of putty powder, which are not only related to material properties but also affected by environmental factors. Understanding common problems and their causes during construction is of great significance for improving wall quality and avoiding later repairs.

　　墻體基層處理不當(dāng)是引發(fā)后續(xù)問(wèn)題的根源。濟(jì)南部分老舊建筑的墻體存在返堿現(xiàn)象，這是由于墻體內(nèi)部的可溶性鹽隨水分遷移到表面，遇空氣后結(jié)晶析出，若直接在返堿墻面上批刮膩?zhàn)樱瑝A分會(huì)破壞膩?zhàn)又械酿そY(jié)成分，導(dǎo)致膩?zhàn)訉悠鹋荨⒚撀洹Ｐ缕鰤w若干燥不充分（含水率超過(guò) 10%），直接施工會(huì)使膩?zhàn)訉游諌w水分，出現(xiàn)干縮開(kāi)裂，尤其是春季濟(jì)南多雨，墻體含水率偏高，這類問(wèn)題更為常見(jiàn)。此外，基層表面的浮灰、油污未清理干凈，會(huì)降低膩?zhàn)优c墻體的黏結(jié)力，施工后 1-2 個(gè)月可能出現(xiàn)局部空鼓，用手按壓會(huì)有明顯的空洞感。

　　Improper treatment of the wall base is the root cause of subsequent problems. The walls of some old buildings in Jinan have a phenomenon of alkali return. This is because soluble salts inside the walls migrate to the surface with water and crystallize when exposed to air. If putty is directly applied to the alkali return walls, the alkali will damage the bonding components in the putty, causing the putty layer to bubble and fall off. Insufficient drying of newly built walls (with a moisture content exceeding 10%) during direct construction can cause the putty layer to absorb moisture from the wall, resulting in shrinkage and cracking. This is especially common in spring when Jinan is rainy and the moisture content of the wall is high. In addition, if the floating ash and oil stains on the surface of the base layer are not cleaned thoroughly, it will reduce the adhesion between the putty and the wall. Local hollowing may occur 1-2 months after construction, and there will be a noticeable feeling of hollowing when pressed by hand.

　　氣候因素對(duì)膩?zhàn)邮┕び绊戯@著。濟(jì)南夏季高溫干燥，膩?zhàn)訉痈稍锼俣冗^(guò)快，容易出現(xiàn)表面結(jié)皮現(xiàn)象 —— 外層膩?zhàn)右迅赏福瑑?nèi)層仍處于濕潤(rùn)狀態(tài)，后期會(huì)因內(nèi)外收縮不一致產(chǎn)生裂紋，尤其是大面積墻面施工時(shí)，若未及時(shí)灑水養(yǎng)護(hù)，裂紋可能貫穿整個(gè)膩?zhàn)訉印６镜蜏兀ǖ陀?5℃）時(shí)，膩?zhàn)又械乃忠捉Y(jié)冰，冰晶膨脹會(huì)破壞膩?zhàn)咏Y(jié)構(gòu)，導(dǎo)致施工后出現(xiàn)粉化，用手觸摸會(huì)有粉末脫落。春秋季多風(fēng)，施工時(shí)若未關(guān)閉門窗，強(qiáng)風(fēng)會(huì)加速膩?zhàn)颖砻嫠终舭l(fā)，形成龜裂紋，這類裂紋多呈網(wǎng)狀，影響墻面平整度。

　　Climate factors have a significant impact on putty construction. Jinan is hot and dry in summer, and the drying speed of the putty layer is too fast, which can easily lead to surface crust phenomenon - the outer layer of putty has dried completely, while the inner layer is still in a moist state. In the later stage, cracks may occur due to inconsistent shrinkage inside and outside, especially during large-scale wall construction. If water is not sprayed and cured in time, cracks may penetrate the entire putty layer. When the temperature is low in winter (below 5 ℃), the moisture in the putty is prone to freezing, and the expansion of ice crystals can damage the structure of the putty, resulting in powdering after construction. When touched by hand, the powder may fall off. During spring and autumn, there are often strong winds. If doors and windows are not closed during construction, the strong winds will accelerate the evaporation of moisture on the surface of the putty, forming turtle cracks. These cracks are often in a mesh pattern and affect the flatness of the wall.

　　材料配比與攪拌問(wèn)題直接影響膩?zhàn)有阅堋Ｄ佔(zhàn)臃坌璋幢壤铀當(dāng)嚢瑁艏铀^(guò)少，膩?zhàn)訒?huì)過(guò)于黏稠，批刮時(shí)費(fèi)力且易出現(xiàn)刀痕；加水過(guò)多則會(huì)降低膩?zhàn)訌?qiáng)度，干燥后表面疏松，容易掉粉。攪拌不均勻也是常見(jiàn)問(wèn)題，未充分溶解的膩?zhàn)宇w粒會(huì)在墻面形成疙瘩，打磨時(shí)難以處理，影響后續(xù)涂料的附著。部分施工人員為加快干燥速度，擅自添加水泥或膠水，這種做法會(huì)改變膩?zhàn)拥幕瘜W(xué)性質(zhì)，導(dǎo)致墻面出現(xiàn)返黃或硬化開(kāi)裂，尤其是添加劣質(zhì)膠水時(shí)，還可能釋放刺激性氣味。

　　The material ratio and mixing issues directly affect the performance of putty. Putty powder needs to be mixed with water in proportion. If too little water is added, the putty will become too viscous, making it difficult to scrape and prone to knife marks; Adding too much water will reduce the strength of the putty, and after drying, the surface will become loose and prone to powder loss. Uneven mixing is also a common problem. Insufficient dissolved putty particles can form lumps on the wall, which are difficult to handle during polishing and affect the adhesion of subsequent coatings. Some construction workers add cement or glue without authorization to speed up the drying process. This practice can change the chemical properties of the putty, causing the wall to turn yellow or harden and crack. Especially when adding inferior glue, it may also release irritating odors.

　　施工工藝不當(dāng)引發(fā)的問(wèn)題貫穿全過(guò)程。批刮厚度控制不合理是關(guān)鍵 —— 單次批刮過(guò)厚（超過(guò) 2 毫米），膩?zhàn)訉觾?nèi)部難以干透，會(huì)出現(xiàn)氣泡或脫落；批刮過(guò)薄則無(wú)法掩蓋墻體基層的凹凸不平，影響平整度。陰陽(yáng)角處理不規(guī)范會(huì)導(dǎo)致線條不直，陽(yáng)角易碰撞損壞，陰角易積灰。打磨時(shí)機(jī)把握不準(zhǔn)也會(huì)產(chǎn)生問(wèn)題，打磨過(guò)早（膩?zhàn)游锤赏福?huì)導(dǎo)致墻面起毛；打磨過(guò)晚（膩?zhàn)油耆赏福﹦t難以打磨平整，還會(huì)產(chǎn)生大量粉塵。此外，兩遍膩?zhàn)邮┕らg隔時(shí)間不足（少于 4 小時(shí)），會(huì)使底層膩?zhàn)又械乃譄o(wú)法充分揮發(fā)，引發(fā)上層膩?zhàn)娱_(kāi)裂。

　　The problems caused by improper construction techniques run through the entire process. Unreasonable control of scraping thickness is key - if a single scraping is too thick (exceeding 2 millimeters), the putty layer will be difficult to dry completely inside, resulting in bubbles or detachment; Scratching too thin cannot cover up the unevenness of the wall base, which affects the flatness. Improper treatment of internal and external corners can result in lines that are not straight, external corners that are prone to collision and damage, and internal corners that are prone to dust accumulation. Inaccurate timing of polishing can also cause problems, as polishing too early (due to incomplete putty drying) can lead to wall fuzzing; If the polishing is too late (the putty is completely dry), it will be difficult to polish smoothly and a large amount of dust will be generated. In addition, if the interval between two layers of putty construction is insufficient (less than 4 hours), it will prevent the moisture in the bottom layer of putty from fully evaporating, leading to cracking of the upper layer of putty.

　　后期養(yǎng)護(hù)缺失加劇質(zhì)量隱患。膩?zhàn)邮┕ね瓿珊笮柽M(jìn)行適當(dāng)養(yǎng)護(hù)，夏季應(yīng)每天灑水 1-2 次，保持表面濕潤(rùn)，避免干燥過(guò)快；冬季則需采取保溫措施，確保膩?zhàn)釉?5℃以上環(huán)境中干燥。若養(yǎng)護(hù)不到位，膩?zhàn)訉右壮霈F(xiàn)干縮裂紋，尤其是在窗邊、墻角等溫度變化劇烈的部位。施工后若未及時(shí)保護(hù)，人員走動(dòng)或工具碰撞會(huì)造成膩?zhàn)訉泳植科茡p，修補(bǔ)時(shí)若新舊膩?zhàn)咏Y(jié)合不好，會(huì)留下明顯痕跡，影響整體美觀。

　　The lack of maintenance in the later stage exacerbates quality hazards. After the completion of putty construction, appropriate maintenance should be carried out. In summer, water should be sprayed 1-2 times a day to keep the surface moist and avoid drying too quickly; In winter, insulation measures should be taken to ensure that the putty is dry in an environment above 5 ℃. If the maintenance is not in place, the putty layer is prone to dry shrinkage cracks, especially in areas with drastic temperature changes such as window edges and wall corners. If not protected in a timely manner after construction, personnel walking or tool collisions can cause local damage to the putty layer. If the new and old putty do not bond well during repair, it will leave obvious marks and affect the overall appearance.

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